刘如迪，耿建辉，胡春荣，吴佳龙

（胜利油田胜利动力机械集团 有限公司技术中心内燃机所，山东 东营 257032）

摘要：本文为6L190燃气发动机设计一款电控混合器。首先,依据燃气发动机的基本参数,运用数学公式确定混合器的结构参数,并运用ANSYS CFX对设计好的混合器进行流体仿真分析。其次,通过仿真分析发现模型存在的问题,通过增加导流棒实现混合器的设计优化。最后,分析额定工况下混合器的压力云图、空气流速矢量图、燃气流速矢量图以及空燃比波动情况。通过本文的阐述,为6L190燃气发动机设计一款合适的混合器,从而有效的实现发动机的可靠运行。

关键词：燃气发动机；混合器；ANSYS CFX；空燃比

Abstract：An electric mixer for the 6L190 gas engine is designed. Firstly, based on the basic parameters of the engine, the structural parameters of the mixer is determined using the mathematical formula, and fluid simulation analysis of the mixer is conducted with ANSYS CFX. Secondly, issues in the model were identified through the simulation analysis, and the design of the mixer is optimized by adding a guide rod. Finally, the pressure nephogram, air flow velocity vector diagram, gas flow velocity vector diagram and A/F ratio fluctuation under the rated conditions are analyzed. The designed mixer helps achieve stable operation of the engine.

Key Words: Gas Engine; Mixer; ANSYS CFX; A/F Ratio